Maddening

from WordNet (r) 3.0 (2006)

maddening
    adj 1: extremely annoying or displeasing; "his cavelier curtness
           of manner was exasperating"; "I've had an exasperating
           day"; "her infuriating indifference"; "the ceaseless
           tumult of the jukebox was maddening" [syn:
           {exasperating}, {infuriating}, {maddening}, {vexing}]

from The Collaborative International Dictionary of English v.0.48

Madden \Mad"den\, v. t. [imp. & p. p. {Maddened}; p. pr. & vb.
   n. {Maddening}.]
   1. To make mad; to drive to madness; to drive to insanity; to
      craze.
      [1913 Webster]

   2. To make very angry; to enrage; to excite violently with
      passion.
      [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

maddening \maddening\ adj.
   extremely annoying or displeasing.

   Syn: annoying, exasperating, infuriating, vexing.
        [WordNet 1.5]

from Moby Thesaurus II by Grady Ward, 1.0

47 Moby Thesaurus words for "maddening":
      agitating, breathtaking, charged, cliff-hanging, disquieting,
      distracting, disturbing, electric, exciting, exhilarating,
      galvanic, heady, heart-expanding, heart-stirring, heart-swelling,
      heart-thrilling, impressive, inflammatory, intoxicating, jarring,
      jolting, mind-blowing, moving, overcoming, overmastering,
      overpowering, overwhelming, perturbing, piquant, provocative,
      provoking, ravishing, soul-stirring, spirit-stirring, stimulating,
      stimulative, stirring, striking, suspenseful, suspensive,
      tantalizing, telling, thrilling, thrilly, troubling, unsettling,
      upsetting